Concentrations and health risks of heavy metals in soils and crops around the Pingle manganese (Mn) mine area in Guangxi Province, China
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Heavy metal concentrations in agricultural fields and their ecological risks are a source of extensive concern worldwide. A field survey was conducted to investigate the present situation and health risks of heavy metals (Mn, Pb, Zn, Cu, and Cd) and crops (corn, green soybean, sweet potato, persimmon, cassava, and Chinese chestnut) around the Pingle manganese (Mn) mine site in Guangxi Province, China, which was abandoned 20 years ago. The results showed that the ranges of Mn, Pb, Zn, Cu, and Cd were 2706.54–6760.16, 229.37–275.84, 160.39–215.48, 58.11–75.30, and 5.78–6.98 mg kg−1, respectively, which were approximately 15.38–38.41, 11.76–14.15, 2.12–2.85, 2.09–2.71, and 21.64–28.75 times greater than their respective background values. Most of these concentrations exceeded the national standard for soil quality (grade 2) developed by the Ministry of Environmental Protection of China (1995). Contamination assessments based on the single contamination index (Pi), Nemerow multi-factor index (Pcom), and potential ecological risk index (RI) showed that the sampled soils were severely polluted with these heavy metals, especially Pb and Cd. Similarly, the crops were enriched with Pb and Cd, with concentrations of 10.22–41.78 and 2.33–5.37 mg kg−1, respectively, which were much higher than the threshold values of the national food standards. Contamination assessments with Pi and Pcom also showed that the crops were severely polluted with Pb and Cd. The bioaccumulation factor values for Cd were highest among the heavy metals, with an average mean of 0.66 in these six crops, demonstrating that Cd readily accumulates in these crops. An assessment showed that the health risk for adults living in the mining-impacted areas was significant. Our study strongly recommends that heavy metal contamination in agricultural soils and crops grown around the Pingle Mn mining-affected areas should be treated to mitigate the health risks.
KeywordsHeavy metal Soil pollution Foodstuffs Health risk Mining-affected
We thank Dr. Jing Zhu for polishing the language in this manuscript.
This project was supported by the National Key Research and Development Program of China (2017YFD0801500); the National Science Foundation of China (41661077); the Guangxi Science and Technology Development Project of Major Projects (Guike AA17204047-3); the Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), the Ministry of Education, China (ERESEP2017Z01); and the Key Laboratory of Karst Ecology and Environment Change (Guangxi Normal University), Guangxi Department of Education, China (YRHJ16K002).
- Ávila PF, Silva EFD, Candeias C (2016) Health risk assessment through consumption of vegetables rich in heavy metals: the case study of the surrounding villages from Panasqueira mine, Central Portugal. Environ Geochem Health 39(3):1–25Google Scholar
- Cheng XL, Tang ZZ, Han YB, Huang ZY, Huang L, Yang J (2005) The public nutrition academic seminar of Chinese nutrition society, i.e. the conference of Chinese residents dietary and nutrition status change, Daliang, 111-118 (in Chinese)Google Scholar
- Cheng AZ, Wei HH, Tan F (2010) Analysis of the temporal-spatial distribution and seasonal variation of the acid rain in Guangxi Province. Meteor Environ Res (English version) 1(1):62–65Google Scholar
- China’s Environmental Protection Agency (1990) Background value of China soil element. China Environmental Science Press, Beijing (in Chinese)Google Scholar
- Deng Z, Lin Y, Zhang M, Liu G, Wei Z (1988) Karst and geological structure in Guilin, vol 129. Chongqing Publishing House, Chongqing (in Chinese)Google Scholar
- Deng H, Yu FM, Hu LL, Huang FL, Liang J, Zhou ZM (2013) Pollution and Risk Evaluation of Heavy Metals in Rice of Guilin. Proceedings of the Fifth National Symposium on agro environmental sciences 64–68 (in Chinese)Google Scholar
- Huang FF, Li Y, Guo XL (2011) Ecological restoration model of open-pit waste land in Pingle manganese mine, Guangxi. Ming Res Dev 31(1):88–91 (in Chinese)Google Scholar
- Jiang YH, Li N (2013) Assessment of heavy metal contamination in soil around some mining area in Liuzhou. Agr Res App 3:31–34 (in Chinese)Google Scholar
- Lai YP, Tang WJ, Deng H, Li MS, Yu FM, Li Y (2007) Fuzzy synthetic assessment of heavy metal contamination in crop-reclaimed Mn mine lands. J GXNU: Natl Sci Ed 8(8):1801–1806 (in Chinese)Google Scholar
- Lim SS, Vos T, Flaxman AD, Danaei G, Shibuya K, Adair-Rohani H, AlMazroa MA, Amann M, Anderson HR, Andrews KG, Aryee M, Atkinson C, Bacchus LJ, Bahalim AN, Balakrishnan K, Balmes J, Barker-Collo S, Baxter A, Bell ML, Blore JD, Blyth F, Bonner C, Borges G, Bourne R, Boussinesq M, Brauer M, Brooks P, Bruce NG, Brunekreef B, Bryan-Hancock C, Bucello C, Buchbinder R, Bull F, Burnett RT, Byers TE, Calabria B, Carapetis J, Carnahan E, Chafe Z, Charlson F, Chen H, Chen JS, Cheng ATA, Child JC, Cohen A, Colson KE, Cowie BC, Darby S, Darling S, Davis A, Degenhardt L, Dentener F, Des Jarlais DC, Devries K, Dherani M, Ding EL, Dorsey ER, Driscoll T, Edmond K, Ali SE, Engell RE, Erwin PJ, Fahimi S, Falder G, Farzadfar F, Ferrari A, Finucane MM, Flaxman S, Fowkes FGR, Freedman G, Freeman MK, Gakidou E, Ghosh S, Giovannucci E, Gmel G, Graham K, Grainger R, Grant B, Gunnell D, Gutierrez HR, Hall W, Hoek HW, Hogan A, Hosgood HD III, Hoy D, Hu H, Hubbell BJ, Hutchings SJ, Ibeanusi SE, Jacklyn GL, Jasrasaria R, Jonas JB, Kan H, Kanis JA, Kassebaum N, Kawakami N, Khang YH, Khatibzadeh S, Khoo JP, Kok C, Laden F, Lalloo R, Lan Q, Lathlean T, Leasher JL, Leigh J, Li Y, Lin JK, Lipshultz SE, London S, Lozano R, Lu Y, Mak J, Malekzadeh R, Mallinger L, Marcenes W, March L, Marks R, Martin R, McGale P, McGrath J, Mehta S, Memish ZA, Mensah GA, Merriman TR, Micha R, Michaud C, Mishra V, Hanafiah KM, Mokdad AA, Morawska L, Mozaffarian D, Murphy T, Naghavi M, Neal B, Nelson PK, Nolla JM, Norman R, Olives C, Omer SB, Orchard J, Osborne R, Ostro B, Page A, Pandey KD, Parry CDH, Passmore E, Patra J, Pearce N, Pelizzari PM, Petzold M, Phillips MR, Pope D, Pope CA III, Powles J, Rao M, Razavi H, Rehfuess EA, Rehm JT, Ritz B, Rivara FP, Roberts T, Robinson C, Rodriguez-Portales JA, Romieu I, Room R, Rosenfeld LC, Roy A, Rushton L, Salomon JA, Sampson U, Sanchez-Riera L, Sanman E, Sapkota A, Seedat S, Shi P, Shield K, Shivakoti R, Singh GM, Sleet DA, Smith E, Smith KR, Stapelberg NJC, Steenland K, Stöckl H, Stovner LJ, Straif K, Straney L, Thurston GD, Tran JH, van Dingenen R, van Donkelaar A, Veerman JL, Vijayakumar L, Weintraub R, Weissman MM, White RA, Whiteford H, Wiersma ST, Wilkinson JD, Williams HC, Williams W, Wilson N, Woolf AD, Yip P, Zielinski JM, Lopez AD, Murray CJL, Ezzati M (2012) A comparative risk assessment of burden of disease and injury attributable to 67 risk factors and risk factor clusters in 21 regions, 1990–2010: a systematic analysis for the Global Burden of Disease Study 2010. Lancet 380:2224–2260CrossRefGoogle Scholar
- McCauley A, Jones C, Jacobsen J (2009) Soil pH and organic matter. Nutr Manag Module 8:1–12Google Scholar
- Ministry of Environmental Protection of China (MEP) (1995) Environmental quality standard for soils (GB15612-1995, grade 2). (in Chinese)Google Scholar
- Ogunkunle CO, Fatoba PO (2013) Pollution loads and the ecological risk assessment of soil heavy metals around a mega cement factory in Southwest Nigeria. Pol J Environ Stud 22:487–493Google Scholar
- The Environmental Research Institution of Guangxi (1992) Research methodology and soil background value in Guangxi. Guangxi Science and Technology Press, Nanning (in Chinese)Google Scholar
- Vousta D, Grimanins A, Sammara C (1996) Trace elements in Vegetables grown in an Industrial Areas in relation to Soil and Air Particulate matter. Environ Poll 94(3), 325-335Google Scholar
- Yuan QH, Ye YL, He ZS (2010) Heavy metal contamination investigation in Lanping mine site. Stra J of Pres Med 16(6):68–69 (in Chinese)Google Scholar